Whoever you choose to represent you in your case, here are some tips (not legal advice) and things you can do to make the outcome of your case more successful:
Don’t procrastinate.  Avoidance of the unpleasant is human nature.  Make up your mind to address the issues of your case as early as possible.  Produce all the information and documents your attorney asks for as quickly as you can.  Don’t hesitate to tell everything that might possibly be relevant to you attorney.  I can’t tell you how many times a client, on the eve of trial, emails me with “Oh, I just found this” or “I just remembered this.” And it turns out to be crucial, game-changing information.
Select an attorney you can trust.  It is important that you feel you attorney is sincerely looking out for your best interests.  If you feel you need more information about how your case is going, ask for it.
No one cares more about your case than you do.  Take responsibility for keeping your attorney fully informed.  You are the one who knows the facts of your case.   It is much easier to represent a proactive, rather than passive, client.

Once you engage an attorney, stop talking with the opposing party about anything that has or could have to do with your case.  All communication should be going through your attorney.
Keep records, time, phone, expense logs, receipts.  Take relevant photos.  Put your records in pdf format so they can be easily shared with your attorney.

In a divorce, you and your spouse’s finances are likely intertwined.  Have a copy of the tax statements you have jointly filed, all bank and other financial institution records.  Discuss with your attorney steps you should take if you have a joint banking account.

Yes, you can file for a divorce even if you and your spouse are continuing to reside in the same household.
Have your attorney put his or her advice to you in writing, in case disagreements about who said what occur later.  Likewise, your attorney should require that important things you say to him or her are confirmed in writing.

Be patient.  The workings of the law are slow, and a lot of procedure is involved.  Your attorney does not control the process, he or she only controls your input into the process. 
Know that however ready you are to be divorced, it is always a painful process because so much went into forming what has become a failed marriage bond.  Be kind to yourself and civil to the opposing party.  You won’t regret being courteous to a soon to be ex-spouse, particularly if you have young children and must remain in a co-parenting relationship with them.

As a parent, if your soon to be ex-spouse is difficult to deal with, you can limit their opportunities to make your life miserable by asking the court to order that all communication regarding the children be through an app such as Our Family Wizard or the free app, CloseApp.

There is light at the end of the tunnel.  It is painful when a marriage ends.  There will be a grieving process.  Sometimes divorce is necessary to restructure your personal and family life for the better.  Some studies say people who divorce are no happier after the divorce than they were when married.  Other studies say in five years many people, particularly women, are happier.